Giant marble phalluses on the sacred island of antiquity.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

Community owned and operated, this property is home to a diverse set of nudists.

The largest self-built castle in the U.S., six decades in the making.

Eighteen miniature death-scene dioramas.

An institution that preserves the history of institutionalization.

Dramatic river bend surrounds a natural red-rocked pedestal.

This massive library holds what was once the largest book collection in the world.

The temple that withstood the Nazis.

The second-deepest known cave on Earth, hidden in an extremely remote mountain region.

This simple apartment may have inspired some of the most important theories in the history of science.

The sign at the garden gate reads: "These Plants Can Kill."

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

270 million year-old forest of stone.

Thousands of well-dressed mummies below a monastery.

The unique ecosystem atop an Australian mountain is home to some colorful inhabitants.

One of the highest emergency huts in the world has been waiting almost a century to give imperiled climbers a place to lie down.

World's largest permanent maze made of 18,000 conifers.

A speakeasy takes on Chicago's drinking culture.

These Nubian pyramids are strange and unique, even by pyramid standards.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

A collection of venomous snakes and reptiles for the whole family to enjoy.

A font of vintage porn on the silver screen.

Iconic rock formations that allow for exploration during high or low tide.